Textile product derived from an animal fiber and a process of making same



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' TEXTILE rnonucr Damn rnom'. m A rman FIBER AND A 1,389,275, Specification of Letters Patent.

No thawing.

'chlorous acid have principally been used.

Hypochlorous acid especially has hereto- UNITED STATES PATENT, OFFICE.

WHEEL HELMUTH SOHWEITZER, OF HEIDELIBERG, GERMANY, ASSIGNOR T0 SOCIETY TEGHNOCHEMIA. AKTIENGESELLSCHAIT, OF GLARUS, SWIT- SAME.

PROCESS OF MAKING To all wkom'z't may concern:

Be it known that I, WILnnLM HELMUTH man have invented a new and useful Textile roduct Derived from an Animal Fiber and a Process of Making Same, (for which I have filed an. application in Germany,

April 20, 1920,) of whichthe followingis a full, complete, and exact specification.

Among the ingredients described and recommended heretofore for the oxidizing,

treatment of'animal fibers, such as wool fiber, gaseous chlorin, bromin water and hypofore only been used in a concentration cor.- respondin to 12 kg. ofchlorid of lime for 100 kg. 0 the fiber in form of an aqueous solution of chlonid of lime of l.5 per cent.

Bromin dissolved in water has been recommended in the proportion of 5 to 7% parts of bromin for 100 parts of the fiber.

Chlorin gas has never'been recommended in a proportion higher than 25 liters of chlorin gas for 1 kilo of the fiber, of chlorln for 100 kilos of the fiber.

Till now it was believed that the animal fiber undergoes destruction when treated But that is not the case. p I have now found that on the contrary in j a surprising manner the use of a very great excess of hypochlorous acid, as for instance 100 to 150 kilos of chlorid of lime for 100 kilos of the fiber, or of a notable excess of any other well known oxidizing agents does no harm to the fiber.

When the fiber has been treated with such an excess of h hlorous acid or other oxidizing agent it is further treated, after rinsing, with a boiling solution of soap.

viz. 8 kg."

Patented Aug. 30, 1921.

Application filed April as, 1921. Serial m. 465,289;

E trample.

. 100 kilos of. pig 'hairs are treated at ordinary temperature for about one hour with 120 kilos of chlorid of lime dissolved in 1000 liters of water to which an equivalent quantit of ordinaryhydrochloric acid has been a ded; the pig hairs are then washed with water and boiled for some time with a solution of 5 kilos of Marseille soap in 2000. liters of water.

Fibers which have been treated in this manner show a great differencewith the chlorinated wool known till now. They are much softer, have a greater ailinity for coloring matters and are far more lustrous.

What I claim is:

1. The herein described textile product animal fiber with a great excess of an oxidiz-' with a higher quantity of hypochlorous acid.

1n agent, rinsing the thus treated fiber and su jecting the rinsed fiber to a boiling with a solution of soap.

In witness whereof I have hereunto signed my name this 30th day of March, 

